Sewing machine guard



March 24, 1942. M. Mums@ 2,277,133 I SEWING MACHINE GUARDV Filed Junell, 1940 2 Sheets-Sheet 1 fri* ' 1N VENT OR. f6 Y mfr/fw Muff/w BY "M2/@WJ/2 ATTORNEY.

March 24, 1942. l M MURINO 2,277,133

SEWING MACHINE GUARD `Filed June V1, 1940 2 sheets-sheet 2 ,00 di 20 5xfa,

ATTORNEY.

Patented Mar. 24, 1942 UNITED sfr; .TES

SEWING MACHINE GUARDv Matthew Murillo, New York,N. Y.

ApplicationJune 1, 1940, ScriaLNo; 338,327

2" Claims.

This invention relates to a sewing machine guard.

The essential object' of the invention is the production of asewing'machine guard, which can be easily positioned and maintained inplace on the table of the sewing machine without connecting it to saidtable byk anyl means.

The second object of the invention is the production of a sewing machineguard, which will protect the operator from contacting with the flywheeland belt of the sewing machine and their appurtenances, while themachine is in operation and whichv will permit the inspection andadjustment of the appurtenances of the ilywheel and pulley whenrequired.

The third object of thefinvention is the productionof a sewingA machineguard which will prevent the cloth or other material that is being sewedcoming in` contact with the iiywheel, pulley and belt. of the machinewhile the latter is in operation.

Other objects of the invention will be apparent from the drawings,specification and claims of the application.

In theV drawings Fig. l shows a fragmentary portion of a sewing machineand a section of the guard as on the line I, of Fig. 2; Fig. la is anenlarged fragmentary portion of Fig. l; Fig. 2 represents a partial lefthand side view of Fig. 1 and section of Fig. l on the lines 2', 2 and2c; Fig. 2a indicates an enlarged fragmentary portion of Fig. 2; Fig. 2bindicates an enlarged fragmentary portion of a supplementary side wallof the guard and partial section of Fig. 1 on the line 2b, 2b; Fig; 3shows atop View of Fig. 2 partly in section ason the line' 3, 3 of Fig.2. Fig. 4 represents a side View of the guard as viewed in the directionofI the arrow 4 of Fig. 1 with a modification and section on the line 4aof Fig. 5 and Fig. 5 is a partial fragmentary section of Fig. 4 on-theline 5, 5.

Referring to Figs. 1 to 3 a fragmentary portion of a sewing machineis'shown at 20 with its driving shaft 2| and its leg 22. The latter iscut away as shown at 25 to provide a seat for the collar of lockingshaft 55 to be described.

The table of the sewing machine is indicated in section at 28.

The sewing machine guard comprises a housing designated in its entiretyby the numeral 3|). The housing 30 comprises the main outer side wall 3I, curved at its upper portion as indicated at 32, and the vertical ends33 and 34. A clearance opening 35 is indicated in the side wall 3|. Aspacing strip 36 is fastened to the outer face of the side wall 3| atits lower end. Inthe side wall 3| is also shown the circular clearanceopening 31, with the horizontal extensions 38 and 39. To the wall 3| isfastened the spring clamp having the prongs 46 and the body portion 40a.

From the side wall 3| extends at right angles thereto the rear wall 4|,with the curved upper portion 42, and the latter extends to a verticalplane extending through the axial center of the wall 3| forming the end44.

The wall 4| has integral therewith and at right angles thereto theperipheral inner side wall 46 of the housing 36.

By means of the construction described, the housing 3|) is open at itsfront end and at its inner side. The shaft 2| extends into the housing30 and has fastened thereto the ywheel 5U with its belt pulley 5|. Thepulley 5| is driven in the usual way by the belt 52.

A locking shaft 55 is shown with the threaded portion 56- which is inengagement with the leg 22 and is indicated with the collars 51, 58, 59and 60.

An angle shaped supplementary side wall is designated in its entirety bythe numeral 65. The side wall comprises the Vertical member 66 with theclearance opening 66a, see Fig; 3similar to 35, and the horizontalmember 61. One-end of the horizontal member 6l is indicated, seev Fig.3, at 68 and its other end is shown at 69, 7i) and ll. In the verticalmember 66 of the angle shaped wall 65 is indicated an opening 76,similar to 31 and has the extensions i8 and 'I9 respectively similar tothe extensions 38 and 39.

A spring clamp with the prongs andthe body portion 8| has the latterfastened to the member 66.

The locking shaft 55 enables the main outer side wall 3| of the housing30 and the member 66 of the supplemental side wall 65 to bedetachablyand securely locked to the leg 22 of the sewing machine.

The modified housing of the guardfor the sewing machinesee Figs. 4 and5,is indicated in its entirety by the numeral 82 and comprises the mainouter side wall 83, with the clearance opening 84 similar to 35, therear wall 85 similar to 4| and the peripheral inner side Wall 86 similarto 46.

The wall 83 has integral therewith and at right angles thereto thehorizontal member 8l.

Referring to Figs. 1 to 3 the horizontal member 6l, of the side wall 65,has positioned thereon the foundation plate of a bobbin windingapparatus, which latter is well known, but will be described.

The plate 90 is indicated with the longitudinal edges 92, 93 and 94, andthe end 95. The other end of plate 90 is similar to the'ends 69 and 'I0of the member 61 and the plate 90 is further shown with the curvedportion 96. The plate 90 has extending therethrough the elongatedopenings |00, and clamping screws extend through the openings |00. Thescrews |05 engage the horizontal member 6`| of the supplementary sidewall 65, to adjustably clamp the foundation plate 90 to said horizontalmember 61.

Referring to Figs. 4 and 5 the foundation plate is again indicated at90, and is fastened to the horizontal member 81 of the outer side wall83, by the clamping screws |05a, which extend through the openings |00aof the plate 90.

In the modification shown in Figs. 4 and 5, the locking shaft 55 isomitted, and the horizontal member 81 is fastened to the table 28 by thescrews ||0.

The foundation plates 90, of both forms of the invention of the bobbinwinding apparatus are indicated with the journal brackets I I5, in whichis pivoted the lower portion of the barrel H6, by means of the pivot Theupper end of the barrel ||6 has integral therewith the crank arm I I8.The barrel I I6 has a spring actuated plunger |20 therein, which bearson the plate 90. In the upper end of the barrel ||6, is journaled theshaft |22. One end of the shaft |22 carries a bobbin not shown and tothe other end of said shaft is fastened the pulley |25. From thefoundation plate 90, extends the bracket |26. A link |28 has one endpivoted to the pin |29 extending from the bracket |26. The link |28 hasformed therewith the projection |30.

A link |32 with the projection |33, has one end connected to the link|28 by the pivot |35, and its other end is pivoted to the crank arm ||8.A spring guide |40, is carried by the projection |33 of the link I 32.Adjacent to the end 95, of the plate 90, is fastened the bracket withthe horizontal member |42, and the vertical member |43, having theopening |44. A shaft |46 extends from the member |43 and has journaledthereon the pulley |48.

It will be noted that when the pulley |25 of the bobbin windingapparatus is in its operative position as shown in the drawings, that itbears against the belt 52, to be driven by the latter. The pulley |25can be spaced from the belt 52 by collapsing the links I 28 and |32 inthe usual way, that is to say by lifting the link |28, by means of theprojection |30.

To locate the housing 30 in place, Figs. 1 to 3, the operator positionsit over the flywheel 50 and its appurtenances, with the lower edges ofthe walls 3|, 4| and 46 bearing on the table 28. The housing 30 is thenmoved forwardly in the direction of the arrow A, Fig. 2 until theclearance opening 31 is axially in line with the locking shaft 55. Thehousing 30 is then moved to the left in the direction of the arrow B,Fig. 1 until the collars 58 and 59 are positioned in line with theopposite faces of the wall 3|. The housing 30 is then again moved in thedirection of the arrow A, until the closed end of the extension 38 bearsagainst the locking shaft 55, see Fig. 2. When the housing 30 is in theposition just described, the spring clamp having the prongs 40, holdsthe outer side wall 3| in detachably locked position.

The operator next clamps the vertical member 66 of the supplementaryside wall 65 in place, by locating its opening 16 axially in line withthe locking shaft 55 and thenmoving the angle shaped supplemental sidewall 65 in the direction of the arrow A, Fig. 2, until the closed end ofthe extension 'I8 bears against the locking shaft 55. In this positionthe prongs clamp the collar 60, and the side wall 65 is detachablyclamped f in position.

The purpose of the extensions 39 and 19 is to permit the guard to befurther moved in a direction opposite to the arrow A, Fig. 2 if desiredfor inspection of the appurtenances of the guard.

Various modifications may be made in the invention and the presentexemplications are to be taken as illustrative andnot limitativethereof.

Having described my invention I claim:

l.-In a guard for a sewing machine and the like the combination of ahousing comprising a main outer side wall having a clearance openingwith extensions, a rear wall extending from said main outer side wall,an inner side wall extending from said rear Wall, a locking shaftextending from the sewing machine and having a pair of collars integraltherewith, said locking shaft adapted to be detachably seated in one ofthe extensions of the openings of the said main outer side wall and saidcollars adapted to be located adjacent to the faces of said outer sidewall to maintain the latter in operative position.

2. In a guard for a sewing machine and the like the combination of ahousing comprising a main outer side wall having a clearance openingwith an extension, a rear wall extending from said main outer side wall,a peripheral inner side wall extending from the rear wall, an angleshaped supplemental side wall adjacent to said main side wall, saidsupplemental side wall comprising a vertical member and a horizontalmember, said vertical member having a clearance opening with anextension, a locking shaft extending from the sewing machine, said shafthaving three collars on its outer end, a pair of said collars adapted tobear on the opposite faces of said main side wall and a pair of saidcollars adapted to bear on the opposite faces of the vertical member ofthe supplemental side wall, a spring clamp extending from the main outerside wall adapted to lock with one of the collars onthe said lockingshaft and a spring clamp extending from the vertical member of thesupplemental side wall and adapted to lock with one of the other collarsof the locking shaft.

MATTHEW MURINO.

